[ 1734.250527] br0: port 1(dummy0) entered blocking state
[ 1734.250566] br0: port 1(dummy0) entered disabled state
[ 1734.250600] dummy0: entered allmulticast mode
[ 1734.250652] dummy0: entered promiscuous mode
[ 1734.253148] br0: port 1(dummy0) entered blocking state
[ 1734.253180] br0: port 1(dummy0) entered forwarding state
[ 1734.437091] dummy0: left allmulticast mode
[ 1734.437151] dummy0: left promiscuous mode
[ 1734.437178] br0: port 1(dummy0) entered disabled state